Hello everybody,
2 years now I'm using owfs for monitoring home temperature and driving my
heating system. Everything is perfect. Big thanks to developers.
I have recently added to my network a Hobby board LCD driver. Following owfs man
pages I have no problem to write anything to the LCD, or to read the state of
the 3 input switches (the 3 first PIO's as per Hobby board design).
However my problem is that I cannot do this 2 things together:
To read the input switches state I read sensed.BYTE as per owfs man pages I must
first write 0 to PIO. And this is the problem as soon as I write something to
the PIO (0, 1, 8 or 255) the next write to the /LCD_H/message will fail to write
anything on LCD screen. I have try several things but cannot succeed. Obviously
I miss a re-init, printf "\x0C" > /LCD_H/message doesn't help.
If anybody can help I would be happy!
Here is my script
The 2 functions are working, but not together.
To have the LCD correctly working I must comment this line
#echo 0 > $MYLCD/PIO.BYTE
if not 1 message on 2 isn't displayed.
#!/bin/bash
HeureDernierAffichage=0
COMPTEUR_AFFICHAGE=0
MYLCD=/tmp/1wire/29.1C9E09000000
LCD1="$MYLCD/LCD_H/screen"
LCD2="$MYLCD/LCD_H/message"
MESSAGE[1]="Bonjour Pirouette! Temp. Cave="
MESSAGE[2]="Bonjour Pirouette! Temp. Chaud="
MESSAGE[3]="Bonjour Pirouette! Temp. Entree="
MESSAGE[4]="Bonjour Pirouette! Temp. Ext="
MESSAGE[5]="Bonjour Pirouette! Temp. Server="
function DerouleAffichage # scroll message 1 to 5
{
let TEMP_PASSE=`date +%s`-$HeureDernierAffichage # message on LCD will change
every 5 seconds
echo -n "TEMP_PASSE=$TEMP_PASSE "
if [ $TEMP_PASSE -gt 5 ]; then
let COMPTEUR_AFFICHAGE=$COMPTEUR_AFFICHAGE+1
if [ $COMPTEUR_AFFICHAGE -gt 5 ]; then let COMPTEUR_AFFICHAGE=1; fi # after
message 5 loop to message 1
let HeureDernierAffichage=`date +%s`
printf "%s" "${MESSAGE[$COMPTEUR_AFFICHAGE]}$COMPTEUR_AFFICHAGE" > $LCD2
echo 0 > $MYLCD/PIO.BYTE
fi
}
function TestAppuiBouton
{
let REGISTRE=`cat $MYLCD/sensed.BYTE | sed -e "s/ //g"`
let "REGISTRE &= 7" # Mask with AND keep 3 first bits
}
# Initialise the display
printf "\x0C" > $LCD1
printf "1" > $MYLCD/LCD_H/clear
printf "1" > $MYLCD/LCD_H/home
while [ 1 ]
do
DerouleAffichage
echo "COMPTEUR_AFFICHAGE=$COMPTEUR_AFFICHAGE REGISTRE=$REGISTRE"
sleep 0.5
TestAppuiBouton
done
Thanks
--
Guy
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